cabinet /ˈkæb.ɪ.nɪt/noun 14forms 1 noun14 •A storage closet either separate from, or built into, a wall. •the senior ministers who meet together to set a government's direction and control its departments •A group of advisors to a government or business entity. •A cupboard. •A museum display case. •The upright assembly that houses a coin-operated arcade game, a cab. •An enclosure for mechanical or electrical equipment. •A cabinet-level agency in the executive branch; that is, an agency headed by a member of the governor's cabinet. •A collection of art or ethnographic objects. •(figurative) A source of valuable things; a storehouse. •(historical) A size of photograph, specifically one measuring 3⅞" by 5½".Holmes took a note of it. “One other question,” said he. “Was the photograph a cabinet?” — 1891 •(dialect) Milkshake. •(no longer used) A small chamber or private room.Philip passed some hours every day in his father's cabinet. — 1855 •(no longer used) A hut; a cottage; a small house.Hearken a while from thy green cabinet, / The rural song of careful Colinet. — 1579 formscabinets